Side-closing plate



E. B. CAMPBELL.

SIDE CLOSING PLATE.

APPLICATION FILED ms. 10,

Putontvdqluly15, HHS.

uv VEJVTOR,

,tion of m UNITED STATES PATENT OFFICE.

EDWARD B. CAMPBELL, OF ST. LOUIS, MISSOURI. ASSIGNOR T0 WILLIAMS PATENTCRUSHER AND PULVERIZER 00., OF ST. LOUIS, MISSOURI, A CORPORATION OFMISSOURI.

SIDE-CLOSING PLATE.

To all "whom it may concern:

Be it known that I, Enwaun B. CAMPBELL, a citizen of the United States,residing at St. Louis, State of Missouri, have invented certain new anduseful Improvements in Side-Closing Plates, of which the follow ing is aspecification.

his invention relates to certain new and useful improvements in sideclosing plates for grinders, pulverizers andlike machines. thepeculiarities of which will be hereinafter described and chimed.

The object of my invention is the provision of a two-part plate,-onepart securing the other in position for closin the side opening in thehousing of the mill grinder, or other machine of the class described.

In the accompanying drawing on which like reference letters indicatecorresponding parts, Figure 1 represents a side view of a mill of thecharacter described illustrating in Y improvements; Fig. 2 an end viewof tie same and partly in section; Fig. 3 a similar side view to Fig. 1taken on the section plane 2-2 of Fig. 2' and Fig. 4 a detail viewshowing the pre erred form of my closing disk.

The letter A designates the housing of a mill grinder or other likemachine, having a rotorshaft B, supported in ball bearings and ringhousing (not shown) that are mounted in housing clamps C, each comprisina circular split rin set off from the si e of the mill a suita le spaceD at the to of the ring, and formin part of the si e by means of asemicircu ar shrouding web connection E- that extends above thehorizontal central plane through the shaft as shown in Fig. 3. Theobject of this term of mounting the bearin s', is to provide" the spacebetween each si e of the mill and t e adjacent hearing, as required byinsurance ruling. A bolt F at the top of the clamping ring, serves totighten the clamp 11 on the ring housing of the ball bearing W eninserted in the clamp. In Fig. l the ball bearing and its ring housing.are not shown, in order to show clearly the locaimprovements. In eachside of the mil -is a circular opening G, substantially the size of theopenin 1n the said clamping rin C, in order to al 0W of passing the shaand rotor within the mill throu h the clamp and side of the mill. In orer to close this opening G I provide Specification of Letters Patent.

Patented July 15. 1919.

Serial No. 276,165.

a thin fiat plate made in two parts, [I and I. The divided closing plateis preferably circular, and the dividing line preferably is locatedthrough the center of said disk, corresponding to the horizontal centralplane through the shaft or otherwise. A circular opening J is formedwhen the disks come together in proper position on the outside of themill to embrace the shaft B. In the clamp housing web connecting thelower part of the clamp to the side of the mill,

formed a groove K, preferably continuous as indicated in Fig. 3, andclose to the outside of the mill. In this groove fits the lower half Hof my improved disk. The groove being struck in an are from the. centerof the shaft, corresponds with the circular half disk H, so that whenthe shaft is in position the lower half disk can be placed upon theshaft and then rotated around the shaft to its position in the saidgroove K. lhe groove thus supports the disk which can only be removed byrotating it to an upper position again. It is necessary to rotate onepart of the plate into its closing position, because the said,

plate is semi-circular, corresponding to the lower part of the bearinghousing as shown in Fig. 3. The shaft with its attachments must first bemounted in the casing and the bearings must be clamped in theirhousings. The divided closing plate is the last to go into place, andunder these circumstances and because of the construction shown, onepart at least of the divided closing plate must he rotatably mounted insaid groove in order to adjust it to its closing position. The upperhalf-disk I then slips into position upon the shaft, with the partingline at the ottom meeting the corresponding line or edge of the lowerdisk, and. with the bottom ends at the outside located in thecorresponding ends of the groove above the partin line of the disk, as,shown in Fi 3. Th1s divided closing plate lies outsi e of the casing andso does the roove K which is practically in the plane 0 or flush with,the outer face of the casing, and the said plate therefore lies partlyin said groove and partly out of the groove whenfnlly adjusted to itsclosing position. The upper ends of said groove .therefore hold thelower ends of the upper disk, and some means for holding the top of thedisk I against the side of the mill, and against oh: 4 r

rotation about the shaft, is required. I hnveshown such means in theform of two extensions or lugs L, having holes through which pass screwbolts M into the side These lugs project out be enough from the disk I,to allow the ready insertion of the screw belts without interferencefrom the clamping ring 2 cgas' sliown' in Fi 1. In Fig. 2 it will 'lieolaserved that the space D between the clam mind the side of the mill istoo small to -allow the ready insertion of the screw belt M; and otherfastening facilities, such -==""*'a* tl e lugs M are required. Othermeans re-however may be employed to secure the i maerdialf-disk I inposition, and thlis 11mintain the located position of the halt disli H1While this closing plate is divided horizniitallythrough the center itmay be other- Mi wiseihvided, as long as one part, at least,

'i s' retated adjustahly in the "more K in the connecting weh betweenthe casing side and the hearing housing that is oll'set lay said webfrom the side of the casing.

1 claim:

The combination with a mill shaft and a casing having an offset hearinghousin connected by a semi-circular web to casing,-said casing having anopening in its side oPposile said offset housing and said weh iai'ing agroove concentric with said opening and substantially in the plane ofthe outside face of the easing,o'l a circular divided closing platefitting against the face of said casing and rotatably located partlywithin said Well groove and partly outside of said groove, and means tosecure said closing plate in its rotated closing posimen.

In testimony whereof I have ailixed my signature.

EDWA ill) B. CAMPBELL.

